Chahar Bast Bagh (Persian: چهاربست باغ, also Romanized as Chahār Bast Bāgh; also known as Chahār Bast) is a village in Balaband Rural District, in the Central District of Fariman County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 778, in 157 families.